Condenser winding method



Nov. 1,1, 1952 F. wElss CONDENSER WINDING METHOD voriginal Filed sept. 12, 1944 f1 sheets-sheet 1 NOV. 1l, 1952 F, WElSS CONDENSER WINDING METHOD 11 Sheets-Sheet 2 Original Filed Sept. 12, 1944 t lNvEmjoR Nov. 11, 1952 F, wElss 2,617,605

CONDENSER WINDING' METHOD Origina Filed Sept. 12, 1944 L1 Sheets-Sheet 3 ATTORNEYS v Nov. '1"1, 1952 F. wElss 2,617,605

CONDENSER WINDING METHOD original Filed Sept. 12, 1944 11 sheets-sheet 4 Nov. 11, 1952 F. wElss 2,517,605

` CONDENSER WINDING METHOD Original Filed Sept. 12, 1944 11 Sheet's-Sheet 5 Nov. l1, 1952 F, WEISS 2,617,605

CONDENSER WINDING METHOD Original Filed Sept. l2, 1944 11 Sheets-Sheet-6 .175 L55 164. 5 I I 22M-1' sl @4a.

Z "79g l TToRNl-:Ys

NOV 11, 1952 F. wErlss 2,617,605.

coNDENsER wINDING METHOD Original Filed sept. 12, 1944 11 sheets-sheet 7 ATTORNEYS Nov. 11, 1952 F. wElss 2,617,605

l CONDENSER WINDING METHOD Original Filed Sept. 12, 1944 1.1 Sheets-Sheet 8 @am I`JTORNE. s

Nov. ll, 1952 F. wElss 2,617,605

CGNDENSER WINDING METHOD Original Filed Sept. 12, 1944 11 Sheets-Sfeet 9 Nov. 11, 1952 F. WEIS CONDENSER WINDING METHOD Original Filed Sept. 12, 1944 l1 Sheets-Sheet '10 Il!! I! il!!! gg: ,Y

NOV. l1, 1952 F, wElss 2,617,605

CONDENSER WINDING METHOD Original Filed Sept. 12, 1944 11 Sheets-Sheet l1 Y y dvx/mm3. fw w hubs 25a, 21a, 28a and 29a through which are journaled respective rotatable bushings 3|, 32, 33 and 34 into which are fastened mandrels 35, 36, 31 and 38, respectively, by means of set screws; the conducting and insulating strips 3|0, 3H, 3I2, 3|3, 3|4 and 3|5 from the insulating and conducting strip rolls being wound up on these mandrels. These mandrels are constructed as part-mandrels each being really half a mandrel in the form of a half cylinder having a flat surface through the longitudinal axis, which is adapted to cooperate with a similar nat surface of a cooperating part-mandrel, or pin, to hold the condenser strips therebetween. At the back end of each bushing, behind the head, there is formed a collar 39 provided With a driving pin 40.

For driving the mandrels there is provided a shaft 4I (Fig. '1) power driven from a belt 4|a and having fastened to it a pulley 42 which is belted to a pulley 43 fastened to a clutch member 44, the pulley and clutch member being free to rotate on a shaft 45 which is journaled in the frame l (Figs. 1 and 7). Another clutch member 46 is splined on shaft 45, and movable endwise along the splines. For the purpose of engaging the two clutch members there is provided a fork 41 placed within a groove 41a of the clutch member 46 (Figs. 7 and 8), and the fork has xed to it a rod 48 protruding through a head 49 xed on the frame l0. A bell crank 50 is pivoted to the frame at so that when the arm 52 of the bell crank is rotated clockwise (with reference to Fig. 8) its other arm 53 pushes against rod 48 to move the clutch member 46 into engagement with member 44, thereby causing shaft 45 to rotate.

There is journaled to the vertical wall of frame l0 a shaft 54 having xed at its rear end a bevel gear 55 which engages with a bevel gear 56 fixed to the front end of shaft 45. At the opposite end of shaft 54 is a collar 51 with a driving pin 58 adapted to engage the pin 40 of whichever mandrel bushing collar 39 is placed in driving relation with pin 58.

The mandrel head 25 is rotatable counterclockwise (with reference to Fig. 2) in four successive steps of 90 each, during a full revolution, so that each mandrel is held for a time at each one of four successive stations A, B, C and D, spaced 90 apart, during a complete revolution of the head. During each successive one of these four steps, the next succeeding of the four mandrels is placed in driving relation with shaft 54.

Mandrel indexing mechanism The 90 indexing movements of the indexing head 25 are carried out by the following mechanism: There is fastened to the power shaft 4| a sprocket; 59 which drives by means of a sprocket nchain 60 a sprocket 6| fastened to a shaft 62 (Figs. 1, '7 and 9). There is fastened to sprocket 6| a spur gear 63 which drives another spur gear 64 fastened to a shaft 65. Also fastened to shaft -65 is a worm 66 which drives a Worm wheel 61 which vis loosely rotatable on a shaft 68 (Fig. 9). On the hub of worm wheel 61 is fastened a clutch plate 69 containing internal teeth 10 (Figs. 1 and 1c). There is fastened on shaft 68 a gear 1| having mounted on its hub a pivot 12 on which is pivoted a dog 13 having a projection 14 adapted to engage the internal teeth whenever the dog 'is released to make the engagement. The dog is normally held in engagement with the teeth by means of' a spring 15. On top of the dog is a 4 boss 16 having a bevel 16a (Fig. 1d) leading up to a lug 16h adapted to be engaged by an arm 11 attached to the plunger 19 of a solenoid 30. A compression spring 8| (Fig. l1) holds the arm in its position in the path of boss 16 so that when the boss moves under the arm 11, the bevel 16a travels under the lower edge of this arm to depress the dog and disengage its clutch teeth. When the lug 16o engages the side of arm 11 the dog and its gear 1| stop rotating. When solenoid is energized, however, ythe arm is pulled out of engagement with the dog, thereby permitting the dog to rotate under action of spring 15 to engage the clutch teeth.

Also mounted on shaft 68 is a Geneva arm 82 having a pin 83 adapted to engage with the radially extending Geneva slots 84 of a Geneva plate 85 which is fixed to the indexing shaft 24 to which the indexing head 25 is attached. The Geneva plate is provided with four arcuate hubs 86, one being located between each adjacent pair of slots; and the radius of curvature of each of these hubs is equal to the radius of the circular portion of the hub 81, so that when the indexing head 25 is indexed in any one of .the four stations, hub 81 engages the corresponding one of the four hubs 86 to lock shaft 24 against rotation. The circular hub B1 of arm 62 is provided with an arcuate cut-out 81a to provide clearance for the extremities 86a of the hubs B6 when the Geneva arm is rotated to rotate the Geneva plate.

Fixed to shaft 68 is a sprocket wheel 88 which drives a sprocket wheel 89, fixed to a shaft 90, by chain 9|, Ithe gear ratio being one-to-one so that there is one revolution of shaft 90 for each revolution of shaft 68. Fastened on shaft 90 is an eccentric 92 on which rides a roller 93 journaled on the end of bell crank arm 52 (Fig. 8). The eccentric 92 is so related to the Geneva arm that the eccentric turns the bell crank to engage the clutch member 46 With clutch member 44 just after the Geneva pin 83 has swept through the Geneva slot to complete the 90 indexing movement of the head 25.

Turns counting mechanism For determining the number of turns of paper and foil strip to be wound on the mandrels for each condenser roll, there is provided a turns counting mechanism (Figs. 1, 5, 6 and 7). This comprises a half nut 94 sldably pivoted at one side thereof on a rod 95 and engaging the threaded shaft 45 so that when the clutch members 46 and 44 become engaged to roll up the condenser the nut travels to the left (with reference t0 Fig. '1) until it strikes a stop 96 adjustably fastened to a slidable bar 91 by a set screw 96a. There is fastened near the end of bar 91 a dog 98 and a compression spring 99, so that when the stop is pushed by the half-nut, bar 91 is moved endwise against the compression of the spring, and the dog rotates a bellcrank |00, pivoted at 0| against the force of a helical spring |02, thus lifting a catch |03 on the bellcrank from engagement with a head |04 which is fixed to rod 95. The other end of rod 95 is attached to the clutch fork 41. When the catch |03 is lifted from head |04 the latter springs to the left (withreference to Fig. 7) by action of compression spring |05 and thus disengages ythe clutch member 46 from 44.

A bar |86 is mounted by lsupports |01 and |08 on rotatable pins |09, and bar |06 has a member ||0 with a bevel I. The under surface of head 04 is adapted to move sideways on and off of ieibi |l" along' the bve1 so that when 'the s the left, the head VS''O meinbr ||.0 and allowsfbar |06 tov move up itin--v der heheh offspring n; thereby lifting the halffV gagment th thrafdsbn Shaft '-nut on bar 9 5 aiid .perf shoe #rapidly homer@ .its domeinen-tion t. drongen theingzht end other los (Figa) f ahh the screwhhaft 45555; heheh of. hairpin-.leerme 1 la which is .attahheo-ht the ehh to the 'hahihut and vthe other ehh tothe A 'v01-1;] M 'is'..hiouhted on the hainaut-aha a switchflirs having `ah. oh-A B-'tigkb H5@ is fas-tened ftd thframe SO .lshesltheswiteh. knob which `'closes'switchhohhahha-115e and .usate eiosefthe dreun-.through -lshieheid 80 asllehg as .the-nut home (eee .wiring g... 1.1!. This'. pullsfarm 11. out .ofen- "iild'eting operation l"aftereaclfi mandrel Winding,

there is provided the' 'following mechanism:- fjrheresjmountedfon a par |16 (Figs. '6 and 7) a ||1 which .has 'a slot ||'8 containing Ta fjustahie, and `the member is l*faster-led in vposi- "Ition b? a `set screw H111. Bar ||6 ispart of' a flittlll|2| 'which is pivolted at |22 land |23 t'o 'the 'main frame |'0, The vair* rarhgement 'is such that 'before -lthe 'halfenut "04 traveling along '45 Stfikesstp 96, 'a oanlllrl'g member "|24 hount d'on the 'ltalfe'nut engage-s the pivoted e "20fn1'ovihg it' agains't'a 'stop |25, and thereby ifting bar |16 While'the nut passes by; after vh'ch 'th-ebar idrops down `again on its support 'l2 6ff (Fi g '5), `When the nut returns Lhome it simply 'kicks' Jthefreelyl pivote'd "cam A'|20 in the jdpp'site "direction *Without lifting the "han -Frax'nef'lZi lia-sian arm |21 (Fig 5) Whichengages the rearend of la latch lever |28 which is'pivoted :at 129 fiFigfl,"`so fthat when hard I6 "is lifted lafin l 1 is depressed, 'pivoting the'l-at'ch to disnh hess. .1.6, 'thereby pausing nog .1s

latch |30 z which inthe `meantime:has .dropped '75 again.. Shaft |33 `has attaclfredto` it. a knife! |43 which operates to cut .the foi1.strfl1p.., 3i|0 passing under fitr hAnother similar knife |44 attaohedto a shaft |45 which is geared .to shaft |33 by pinions `|46 |41, meshed through an idler pinion |-41ctoperates .at `the same time `to cut the other foil Strip; l .To-prevent .backlash'during the tensloni-nggof the rack spring. |39. .therev is attashed.` tor-shaft V|33 a collar |48 having ashoulder .|49 eng-agee -afbleby a backlash pavvl |50..

The -cradleV .|5ll isprovided with a number .fof transverse :pins |53 at the :rear end .and .I 53* at .the forvvardend vand guides 153m. between whieh Ythe condenser strips passingoing `from the Yrolls to. the mandrel, as shown inEig.. 10b; `and the cutting knives .arie adapted to .rotate "Within arcuate cutlouts |1531) ofthe guides. :To pneven-t the. insulating strips from being out, 4they areled through guide spaces .out of reach Lof the knivea-*as shown. The pins .il-53 bearing against the strips-.exert .a friotional l drag`- with v*consequent tensioning `of the .strips -on .the .way to the windup mechanism. l

Upfto the point -Whene `the strips reach Sthe `parting guides |5311. `each foil strip islheld and supported `'between .insulating fstrips so'. that fthe relatively Weakfoils will .notwrinkleforbecome injured during the feeding. op-erationyand, after passing 'the Vforward ends of guildes |5301, thefoils again become supported when they are brought together fheilween the insulatingistrips atithe for,- VWardfpins,153'.

insulating. sit'riplsevermg andpzrstingmechanism "There are `.mounted on .the frame -a pairi'of rigid'b'eamsv-IM. and |55 lspamed somewhatapart and havingextended `loetween them apair of .pins v|515 and T|51 .-(Firgs. 4 and 4a). Pivotedl on :pin |56 'are 4alf-pair fof uprghts |58 and |519 .which .have extending between their -upperends )a pin -|60.` IBivotedlon -pin '|51 is .an uprightm'ember |6|,`thej upper end of whchisfastened-bya set fsorew |62Ia; 'for adjustment, to :a pin'. |62fwhich `exflzerics .hetwe'enla pair lof spaced .bars |63eand v|164. These ltv'vfo bars |63 and |64 areipivoteii Ion .pinf |60 at z1a `.position forward vof pini|622;1.and lthf'efnontends of 'theseitwobars carry'.fpin.J 165 on I'Whl'l'oh 4freely rota'talfile1ra-fglioove'd` roller 5156. Therejs V'rigidly fastened .'.to`bars |58 andf'lld "a "rigid lhar y|61 '..h-avingl attached .beneath itl ha spring .knife |68. An adj ustingcscrew lsthreaded through-har |$1-serlves lto .position the .knife One or more-'needles J|14). proj eots :forwardlyrom -lbar-I61.

Eastened to #member 50 is :an :arm |12V having A'atli1|',sfnont endlafpin. |13'on v'vvllfiioh"lista-Pfreely rotatable' roller |14. Also-mounted fon thepin '|13 lis the lu'p'perend of la 1evfer|15-vvhichis pivotediat its llower end .to -thefra'me at" 11.16. Roller |14 is continuouslynrgedgby' means of-a fsp'ring |18, into contact with va-oarrn |11 'fastened it'o'l'the indexing head =so that when 'the `indexing l head is indexed 1in any one 'of 'its F.fourindexing positions the roller 14 entersthe :correspondin one of four indents |19 of the -oam |11. e v

lAconta'iner 'of vpaste |80 isimountedon a stand 18| andthe `Vends of the container'areslotte'd-.at |582 to vreceive pins "|83 at the ends ofavroll` |84 adaptedito vrotate lin fthe paste to lsmear the paste over th'esur'face of the roll. The rear'fpin -flth'e roll hasmounted on tfa pulley ilwvhich vis :belted `to a .pulley A'| 86 `fastened Vzn'earfith'ei; front of'gears1l, |89, |90 and |9l, gears 1| and |9| being fixed respectively to shafts 68 and |61, and gears |89 and |90 being idlers (Figs. 1 and 9).

Whenever the indexing head with its cam |11 is rotated through one of its 90 indexing movements, the roller |14 rides out of the indent on the surface of the cam, thereby rotating uprights |58 and |59 counterclockwise (with reference to Fig. 4) and correspondingly rotating upright |6|. Since the length of upright |6| is greater than that of |58 and |59, the effect of this rotation is to move arms |63 and |64 to bring the roller |66 into contact with the paste roll |84, as shown in dotted lines, to smear paste on roller |66. Then when roller |14 drops into the next indent |19, corresponding to the next indexing position, roller |66 springs back again to its normal position with its grooves in engagement with curved wiper wires 221 which are fixed to the frame at 221e, and smearing the paste on the rolled condenser which has just moved down from the winding station A to station B where the roll is in engagement with the wipers 221.

When the roller |14 drops into the indent |19 in station B, the needles |10 spike the insulating strips which now extend from across the mandrel in winding station A to the roll in station B; and an instant later the knife |68 severs them.

Condenser roll-up and ejecting mechanism Mounted on the frame I at some distance in front of the indexing head is a fixed bearing |92 through which is journaled the indexing shaft 24 (Figs. 1 and 3). Shaft 24 has attached to it a pair of supports |93 and |94, support |93 having four radial arms |95, and support |94 (Fig. 3) having four similar radial arms |95a. J ournaled through the corresponding arms |95 and |95a are four barrel shafts |96, |91, |98 and |99 having fastened to their respective ends the four mandrel pins 35a, 36a, 31a and 38a, which are constructed as part-mandrels having fiat surfaces and adapted to cooperate respectively with part-mandrels 35, 36, 31 and 38. These mandrel pin shafts are aligned with respect to the corresponding halfmandrels extending from the indexing head so that the flat surfaces of the cooperating halfmandrel pins face the corresponding flat surfaces of the half-mandrels (Figs. 12 and 13) when the two are brought together. slidable endwise through bushings in their supporting arms so that the dsengagable part-mandrels, or pins, may be engaged and disengaged endwise of the related part-mandrels.

On each arm of support |94 is a pivoted latch 200, which is urged in its latching direction by a leaf spring 20|, and each mandrel pin shaft has fixed on it a shoulder 202, the arrangement being such that when a barrel shaft is slid end# wise to the extreme right (with reference to Fig.

3) it is held in that position by the latch '200 engaging the shoulder 202 until the latch is released in the winding station A by its knob 203 coming into engagement with a cam 204 fixed under the top of an arch 205 which is fastened to the frame (Fig. 1a)

In front of supportl |94 there is fastened to the shaft 24 another support 206 having four radial arms 201, each of these radial arms having a slot 208. There are placed across the slot a pair of pins 209 and 2|0 on which are freely rotatable pulleys '2li and 2|2, respectively. Spaced somewhat from support 206 and also fixed to shaft 24 is a head 2|3. There is passed over each pulley a spring 2 |4 one end of 'which is fastened to The barrel shafts are the head 2|3 at 2|5,r and the other end of which is fastened to a collar 2 I6 freely mounted on the corresponding barrel shaft |96 and held against a shoulder 2|1 in the shaft. The springs 2|4 are maintained in tension so that when the latch 200 releases shoulder '202 at station A, the mandrel pin slides into engagement with the mandrel (with the condenser strips between the halfmandrel and pin) and enters recess 216 at the front of the mandrel (Fig. 12); and at the same time recess 211 at the end of the barrel shaft receives the end of the mandrel. This places the mandrel in readiness to roll a condenser.

To insure that when a mandrel goes from station D to station A, the flat surface of the half mandrel shall face up to receive the condenser strips, there is fixed to the frame behind the mandrel support a cam 236 having a cam groove 236a which receives pins on the mandrel bushings to hold the bushing at the proper angle of rotation to bring the flat mandrel face up in position A (Figs. 1, 3 and 10). This cam has another groove 236D through which pin 40 travels While the mandrel is moving from station A to station B, to keep the wound mandrel from unwinding duringr this movement.

To insure that the at surface of the mandrel pin shall always face the flat surface of the mandrel when latch 200 is released at station A, there are provided correlating shafts 282, 283, 284, and 285 journaled in the arms of supporting members |93 and |94 and of a supporting member 286, and parallel with the four mandrels and the four barrel shafts |96, |91, |98 and |99, respectively. Each correlating shaft is geared to the respective mandrel by pinions 281 and 288 fastened to the respective mandrel and correlating shaft; and to the respective barrel shaft by fluted gear 289 and pinion 290 fastened respectively to the correlating and barrel shafts. This arrangement is such that the pinion 290 slides along the fluted gear when the barrel shaft slides; and this gearing maintains the flat face of the mandrel pin always toward the flat face of the mandrel.

To roll up the loose strip ends, or flag left trailing from a roll on a mandrel at station B after the severing of the insulating strips the shaft |81 carries at its front end a driving pin 2|8 adapted to engage the pin 40 on the mandrel bushing of that mandrel (Fig. 4a.). Rotation of shaft |81 thus operates to continue the rotation of the mandrel after it is indexed in the B station with the paste already applied to the strips, and thus wind up the loose ends or flag to paste it in position. The gearing of shaft |81 is so arranged that shaft |31 stops its Wind up rotation to leave the pin 40 above the mandrel shaft (substantially as shown in Fig. 10) so that when the rolled mandrel finally moves from stations D to A the pin will be following the mandrel shaft as the pin travels within groove 236a. This insures that the fiat part of the mandrel will face up as the mandrel enters station A.

After the next subsequent indexing movement, the condenser winding which has just had its fiag wound and pasted is carried down to the lowermost station C, and in thus traveling downward rubs against the Wiper Wires 221. which prevents any unwinding of the condenser during this downward movement.

The rim of the indexing head is provided with four radially extending pins 2 9 located adjacent the respective mandrels. Each time the head is indexed, the pin 2|9 corresponding to the man- 9,/ drel .in station C,'s.trikes ,an'arm 22|Lflxed to a shaft 22| which is journaledinxthe frame and slidable endwise' (Figs. .3 andl). The rear end o'f'shaft 22|r hasifixed to vit a compound half-nut 222 having two sets of internal threads 223 and 224 (Figs. 7 andv 7a) Two threaded lead screws 225 and 226, alsojournaled in theframe in par'- allelrelation to the shaft 22|, are llocated adjacent `the respective half-nut portions 223 and 224, andl thel twol leadl screws are'geared .together by-thespur'gears 21| and 212 which are fastened respectively 'to shafts 225 and 226. lThe lead screws aredriven from shaft 65 by bevel gear 213 o'n shaft 65 in engagement with bevel gear 214 on shaft 226. Thearrangement is `such that when shaft 22| is rotated a fewdegrees in one direction the` half-nut portion 223k engages the lead screw 225, and when` shaft 22| is rotated in the opposite direction' the half-nut portion k224 engages the other lead1screw`226. TheV right end ofsh'aft 22| (with referenceV to Fig. 3) has xed to :it a bel1crank228, the horizontal leg 229 of which is weightedV to'hold shaft 22| in its most clockwise' positionv of' rotation` (with reference to Fig; 7),A thus keeping half-nut' 222 in engagernent with lead screw225. Lead screw 225 has at'its' rear end an unthreadedportion 225a, and the threads 'of the threaded portion are cut in the direction which causes the -half'nut, when engaged therewith, to move to' 4or remain at the unthrea'ded en'd v2251i, thus keeping shaft 22| in its leftmost` endwise position(with reference to Fig. '3). But when pin 2|9 -on the indexing head strikes :arm 220 the shaft 22| is rotated until theA half-nut portion 224 strikes the other lead screw' 226. This has its threads cut to feed the half-nut inthe opposite direction, causing4 shaft 212| to slide'- to theright .(withreference to Fig. 3).' vA pin 230 fixed on arm 229 rides'alon'g' a platform 23 which is fastened to the frame, thus keeping the half-nut in engagement with lead screw 226 until the pin drops off the right end of the platform, as shown in Fig.- 3'.'

When the half-nut rst engages the forward lead screw 226, in the rearmost position of the half-nut, the vertical arm of'bellcrank 228 en,

gages the shoulder 232 on the sliding barrel shaft which is in station C. Then when shaft 22 I slides to the right itfalso slides the barrel shaft to the right' against the tension of` springs 2|4 until the barrel shaft latches at its shoulder 262, thus leaving `the-roll 23|! on the-fixed halfzrnandrel.

'Iokeep the condenser roll from being pulledoif Pin 230 then drops'A olf; the 'right endV ofplatform 23| (with reference to Fig. 3) on to sub-platform 23|@ so'that'the weighted' arm 229 Vrotates shaft 22|I vback 'to its normal position,l engaging the half-nutF portionA 223 `with Athe return lead' screw 225 'whichv Slides th'e Shaft 22| to` the left until the-halfLnut 'runs off 'the threads in the initial position again. In thus sliding to the left pin 230 slides along sub-platform 23|a and continues to rest on it when back in the initial position.

n. When a wound roll left on a half-mandrel reaches station D, it is removed from the halfmandrel by means of an arm' 235 fixed to shaft 22|. This `arm is of springy metal and is normally in the full 'line' Aposition of' Fig. 44. But when` a mandrel moves'` from station Ci to sta-Y tioni D the' mandrel engages the arm1-235 ata plac'e'ujust back `of the rolled condenser' and 25'7292 'is rotatable on a pin` which lis fixed'. in laf' vsprings outthearm to.the positionmshownmandrel... After the condenser isejvected the arm 235 springs back to its; original full -lineposition.

Strip advancing mechanism' 1 A 'For' the purpose of providing 'ab positive' feed" ofthe foil'and paper strips to the'drivenmam dr'el, at the beginning of a winding, there aref provided feed rollers 29| and 292 (Figs. l, 2 and 5) between which the vcondenser vstrips are passed. VRoller 29| is' Aan 'idler-Hand roller' 292 is connected with a telescoped shaft*v 231 throughy a universal joint 238,l the other endof vthe-shaft fixed to' the end of the' indexing'shaft 24. Rdller frame 244 and is movable upward to abinding' position against roller 29| by' means of apin 245 protruding from the `main f'r'a'rne |11 on which' frame 244 pivots. The` opposite end-of fratrie 244 is Weighted 'by a weight 246 which tends to keep the roller in binding position.

The roller is operated into and out of binding position by the following mechanism (Figs. 1, 2 and 5)'. -A cam arm 241lhaving a .bevel 248 is xed to the clutch vfork 41. *'.Ihere'is plv-fy oted lto the frame atl 249 an arm- 25|) (Fig.l 11).)1l

which carrieson it'fa pin 251i on lwhich iS'reely rotatable la bellcrank 252, one arm 253 .0f which'. is beveled'at 254 and theother arm 255 of 'which' is adapted to engage a stop 2-56 fixed toflever 256. A tension spring 251 attached at one endl` to the bellcrank arm 252 and at fthe other end to a pin `258 xed on` lever25||,. tends-to' keep' the bellcrank turned against stop 256,. 'Lever 259. has fastened to it anrarm2259 to the'other-` entil of which is fastened a knob V26|). Opposterthc; knob 2.60 is a. benerank 2st-(Fig. 5) pivotied `to the frame at 262 having a pair of shoulders 263';

and 264 rvpositioned to engage the front end of:

lever 2,44. Y A tension: spring 265 fastened to armv 259 tends to keep arms 250 and:l 253 rotated.

counterclockwise (with referenceto Fig..Y l)` .on pivot 24a-te keep knob `2st withdrawn from beu-'- crank 26|. the clutch member .46 disengages' fromclutch member A44,-cam 241 in moving by" cam 254. of bellcrank 253, pushes bellcrank 253 againstpin 255, thus rotating arm 259 clock-wise (with refe erence toFig. 1), .on pivot 249 and' consequently rotating bellcrank 26| f ,so that lever 244 is `'re-- leased from the lowershoulder 264. This-causes frame 244 to rotate' under force of weight r24|i until it strikes the' upper shoulder 263, thereby causing the roller 292 tobe brought up t0 '.bindv from its binding Iengagement of the condenser The' organization is such thatwhen' strips against roller 29| after the first couple of turns of the mandrel Winding,'there is provided a release. This comprises (referring to Figs. 1, 5 and 6) a shaft 295 rotatably journaled infthe frame, to which is attached an arm 296, carrying a camming projection 291. The halfnut 94 has mounted on it a corresponding camming projection 298 adapted to engage camv 291 so that after the half-nut travels along the screw shaft 45 a distance corresponding to a small number of mandrel turns, cam 298 lifts up cam 291 and thus rotates shaft 295 counterclockwise (Fig. '6) while the half-nut is passing, after which shaft 295 rotates back to its original position. There is fastened to shaft 295 an arm 299 carrying 'a pivot pin 390 on which is pivoted an arm 30 I. The upper end of arm 30| contains a pin 302 (Fig. on which is pivoted a lever arm 303 having its fulcrum on a pivot pin 304 attached to a bracket 305 which is fastened to the frame. The opposite end of lever 303 carries a pin 306 -onwhich is pivoted an arm 301 depending down to a pin 308 attached to the frame 244 of roller 292 (Figs, 2 and 5), so that every time shaft 295 is rocked by the traveling half-nut, the frame 244 is rotated a few degrees counterclockwise on pin 245 (with reference to Fig. 2) which moves'the forward end of frame 244 from shoulder 263 down to the lower shoulder 264 on bellcrank 26|, thereby holding feed roller 292 disengaged from the condenser strips.

. Operation .Before vstarting the machine the foil and insulating strips are led between the feed rollers 29| and 292 and pulled over the half mandrel in station A while holding the mandrel pin retracted, the foil strips 3| 0 and 3|l being led through the guides of the foil cutter which take them in the path4 of the foil cutters, and the insulating strips 3|2, 3| 3, 3|4 and 3|5 through the guides which avoid the foil cutters. According to usual condenser winding practice, all four'insulating strips overlie each other. Furthermore, one edge of one foil strip 3|0 may, if desired, be placed beyond one side of the insulating strips and the opposite edge of the other foil strip 3H may be placed beyond the other side of the insulating strips, the remaining foil edges being sandwiched within the insulating strips, as shown inFig. 14.

To start the machine, the power driven shaft is rotated by turning on its source of power, and the circuit of solenoid 80 is established by closing switch 3|6 connecting it with the electrical power wires 3|S and 3|9 (Fig. 11). As the halfnut 94 will be at rest in its home position, switch ||5 iwill `be closed, producing energization of solenoid 80. This will engage dog 13 with clutch teeth to produce a revolution of shaft 68, during an early part of which Geneva pin 83 sweeps through a Geneva slot 84 (Fig. 9) to produce a 90 indexing rotation of shaft 24 bearing mandrel head'25. Also, during this indexing movement the mandrel hub on head 25, which moves from station C to station D strikes bellcrank arm |42 to pull rack |34 to the left (Fig. 10) thus tensioning it by the engagement of arm |30 against shoulder |3I. Immediately upon completion of the 90 indexing rotation of shaft 24, latch 209 (Figs la and 3) is operated by fixed cam 204 to allow the barrel shaft |95 to spring toward the mandrel which has just moved from station D to station A, to slide the halfmandrel pin over the condenser strips whichlie across the half-mandrel.

Just after the completion of the indexing1 movement, which occurs during an early part of the' revolution of shaft 68, bellcrank 50 is rotated by cam 92 to engage clutch member 46 with '44 (Figs. 8 and 9) and thus start the mandrel .instation A rotating and the half-nut 94 traveling along screw 45. This causes the contacts of switch ||5 to open and deenergize the solenoid 86, allowing spring 8l to urge arm 11 into fthe path of lug 15 on dog 13 (Fig. 1c). Shortly thereafter lug 15 engages arm. 11, thus disengaging the dog from clutch teeth 10 and stopping the rotation of shaft 68 which has now completed its one revolution.

1 The rotation of the mandrel rolls up the strips pulling them from their respective supply rolls against the retarding effect of the compression springs pushing against the-hubs of the supply rolls. When the mandrel winding is almost completed, the cam |24 on the half-nut (Figs. 6 and 7) strikes cam |20, lifting bar HB off support: |26 to pivot latch |28 away from shoulder |3| of collar |32 (Fig. 10). This allows rack |34 to spring endwise to rotate the knife shafts `|33 and |45 to sever the foils while they are traveling toward the mandrel. After this severance the foil rolls cease to feed any more foil strip to the mandrel and only the insulating strips continue to feed, so that a space opens up between the severed foil ends. Then, after a desired space of, for example, a few inches hasopened up between the severed foil ends, the traveling half-nut strikes stop 96, sliding bar 91 to the left (Fig. '1) and releasing catch |03 from engagement with head |04. This allows head |04 to spring to the left (Fig. 7) and disengage clutch member 49 from 44 to stop the mandrel winding, and at the same time to allow bar |06 to rise and thus lift the halfnutoff screw and the half-nut then immediately springs back to its initial home position. The disengaging movement. of clutch member 45 and its fork 41 causes cam 241 to rotate lever 259 which rotates bellcrank 26| to disengage shoulder 264 from feed roller frame 244 (Fig. 5), and thus allow roller 292 to bind Ythe strips against roller 29| in preparation for the next indexing movement and condenser winding. 1

-When the half-nut reaches home its bolt 4 'closes the switch ||5 whichenergizes the sole- Ljnoid 89 to engage the dog-13 with the internal teeth 19 of the one-revolution clutch. This rotates the indexing head through another degrees, advancing the condenser just rolled to station B and pulling the insulating strips across the flat surface of the half-mandrel which is moving up from station D into station A, as shown in Fig. 10. Just as soon as the mandrel now to be wound reaches station A, the catch 200 holding shoulder 202 engages cam 204, which releases the catch and causes the half-mandrel pin to slide over the condenser strips across the Vhalf-mandrel, as shown in Fig. 4.

. After traveling for a 13j and. it. preferably' feeds .a somewhat 'greater lengthpf strips lthan is :required to supply the travel from` station A to station B, `so `that the strips hang A.in :a slight loop between the feed rollersv and the pins ofthe foil cutter; after lwhich the beginning of `:the mandrel winding tensions the-stripsy against the resistance of the said pins and-:draws `the strips forward and pulls out lthis loop. Y

Also .at the beginning of the indexing movement',;roller |14 (Fig. `Il) is pushed out of Athe indent 11:9 :in which it had :been resting, on to thexouter periphery of cam `|11.to'iretract the knife-|168 from the ,path of the wound condenser moving to station B; and justas it -reaches :sta-

tion..B,1atthe end of the indexing movement.

11 Y:Simultaneously with, this severing operation,

roller (|66 :(Fig. 45) `which Ihad been brought into contact with the paste roll `|84 while roller |14 was on :the outer periphery of cam |11., is brought, .into 4contact with 'the condenser vroll atfstation VB. which immediately upon reaching s station B. begins to turn to roll up and paste the flag due to the engagement yof `driving pin ,213 withpin `4|) of the mandrel in this position. rIhe mandrel continues to be rotatedfor a number of zturnsfin this manner because shaft '|81 which is driving it .continues to be driven .from shaft `6.8 through 4train-of gears |89, |90 and |9| until dog. 1,3disengages from clutch teeth 10'; and since :itft'akes .only about 90 degrees of a revolution of shaft 68 to complete the 4indexing movement, therenremains:about 270 degreesfor itV to continue :to-drive shaft |i81 4after the indexing is` completed "and lwhile the mandrel `at station A is being wound. VAs the .roll at station B is in'contact withthe springy `wiper wires 221- at station B, these'wires cause lthe flag to roll f,

up tightly'.y r Y `Just :before the end of a full rotation of shaft 6.8, eccentric "92 on shaft '90 operates bellcrank Blite-.engage clutch `member 46 with 44. again, l. and-simultaneously to shift bar 91 and head |04 torthe right (withreference to Fig. 7) so that the lower surface of head |04 :slides --over bevel HCI.; and thereby depresses ,bar |06 so that the half-nut 94 in engagement with .the screw shaft 45fcan-travel tothe left upon yengagement of they clutch members without Vbeing obstructed 'by bar |96; o

couple .of screw' turns along shaft 45 and `before. `the loop of the condenser strips .left `hanging between thel 'feed rollers `and 4the foil cutter has been taken up bythe winding mandrel, the cam 298: Yof the l half-nutstrikes cam 29.1v '.(Fig. 6), which moves feed roller 292 from its binding position vto its freegposition by rotating the :feed roller frame 24M?.` to Aengage `it under shoulder 264` (Fig. 5) so that-thestrips -arepulled freely by the mandrel. {Whenrthe .half-nut slides home after-disengagementof the clutch members, cam 298 does not winding :stopped and another indexing movement made .in the mannerj ust described.

As each mandrel bearing a rolled condenser reaches station C, the mandrel pin is 'Withdrawn from it bythe engagement of bell crank 228 with the .shoulder 232 of barrel shaft |98, and the moving to the right of this bell crank r(lig. @35 due to Lthe engagement of half-nut portion 224 with forward-lead screw 226 which is driven during the revolution of shaft 68 through ,gears 61,156, 213, 214, 212 and 21| (Fig. L9). During this operation the condenser is held on the half mandrel by bar 400. ,After shaft 22| slides all the lway to the right, thus causing the barrel shaftto `become lat-ched by catch 200, pin 239 drops off the end of platform 23|, causing the other half-nut portion 223 to engage with :the return lead screw 225 so that shaft 22| slides back home again. The gear ratios and lead screws are so correlated that shaft ,22| .completes :its outward and return sliding movement,

by the time the driving shaft 68 `has completed its single revolution.

The same ,forward sliding movement of shaft l22i| causes .its otherwiper .arm 235 to -slide each condenser off the half fmandrel at station D, dropping it into asuitable chute 35|) and leaving the mandrel 'ready for another winding when it reaches station A again.

It will be noted that the foil and Apaper-are wound, separately cut, lsealed and ejected` 4in a continuous operation with the successive .stepsbeing automatically .andprogressively performed. Referring to Fig. 22 condenser a is being ejected from the mandrel at station D while a'retracting during the `automatic indexing movement of the.

mandrel support from station to station. The insulating strips .of a condenser which is travelr ing .from station A to station B during the finv dexing movement are-.spiked by the .needles .on

the cutting arm so that the insulating strips are held .in'alinement An instant later thecutting knife cuts the insulating strips, so that atthe time the mandrel reaches station 1B the loose ends- :of the insulatingv strips-,are ready l.to be pasted .and .rolled up at the same time that the various other operations .are being performed Aon other condensers atstations A, C `andD.

The sequence. of operations Lcan .be .readily .perceived by reference to the diagrams, Figs.l l6'to 22, inclusive.

, Fig. 16 illustrates condenser ain the .course of :being rolled at station A and before the foil knives |43and |44 have severed the foils.

Fig. 1'7 shows-the condition of the Jcondenser str-ips of condenser a after the foil .knives .have been operated and the gaps have 'been formed between the severed foil ends. `The mandrel Yin station A has now .stopped rotating Aand' the'feed rollers 29| and v292 havebeen brought together. againstthe'v strips therebetween. L

In Fig. 18 the roll a just wound at station is sho-wn vmoving toward station B duringzthe indexing, movement. The paper cutting knife |68 and needles |16 have moved back out of the Way of the strips being stretched across the new part mandrel moving into station A; the foil gap being the distance between e-f; and the feed rollers 29| and 292 are feeding the strips forward.

In Fig. 19 the mandrel just wound has reached station B where the pasting roll |66 is moved into contact with the condenser roll d; needles |19 have spiked the insulating strips, knife |68 has cut the insulating strips, and the half mandrel 38a has snapped into position over the strips across mandrel 38. The paper ends g and h overlap the foil ends e and f respectively.

Fig. 20 shows the roll a on mandrel 35 rolled up at the same time that the new mandrel 38 is having a condenser b rolled upon it while the feed rollers 29| and 292 have become inoperative again.

In Fig. 2l `the roll a on mandrel 35 has moved down to station C, and. the wound roll b on mandrel 38 has moved to station B. The retracting arm 228 has moved into position to retract the half mandrel 35a while a new condenser c on mandrel 31 is being rolled.

Fig. 22 shows the condenser roll a being ejected from the half mandrel 35 Yin station D by the ejecting arm 235 which has moved into the ejecting position. At the same time the retracting arm 228 is retracting the half mandrel 38a from condenser roll b in station C; and the roll c on mandrel 31 is being completed at station B; and a new condenser d is being rolled on mandrel 35 at station A.

The high degree of efliciency of the machine is readily apparent. ly automatic, and the finished rolls are delivered from the mandrels without the requirement of any manual operation.

The rate of winding the rolls is very rapid,

and very little time is lost between successive windings because the stopping of the winding mandrel rotation is followed practically instantaneously by the very rapid indexing movement, after which the succeeding winding commences. Successive windings do no-t await the many nishing steps of rolling up the ag and pasting it and retracting the pin and ejecting the roll, because all these nishing steps are being performed in the succeeding mandrel stations B, C and D at the time rolls are being wound at station A. Even the very short time of the indexing movement is not Wasted because during it the insulating strips are being spiked and severed in making ready for the succeeding winding.

The machine furthermore delivers substantially perfect condensers because all the condenser strips are automatically maintained in their proper alignment and without any human element creeping in which might tend to misalign the strips and produce defective condensers. The operation of the spiking needle |10, together with the fact that the insulating and foil supply rolls are properly aligned and offset to give the strip alignment shown in Fig. 14, automatically insures the maintenance of the alignment.

Although in the specific embodiment of the machine which has been illustrated and described there are shown specific forms of mechanical The operation is completeparts such as clutches, gears and driving elements, it should be understood that the invention is no-t limited 4to the use of these specific forms of parts, but extends to the use of suitable equivalent parts performing the functions disclosed.

For example, the clutch members 44 and 46 need not be of the engaging tooth construction illustrated in Figs. l and '1, but might be of a well known friction type in which a friction surface or cone on element 46 engages a corresponding friction surface or cone on element 44. Furthermore, if it be desired to have the clutch member 46 always stop at the same position of rotation after each clutch disengagement, member 46 might be provided with a lug which engages whenever the clutch is disengaged, with a corresponding lug fastened to the frame at the position in which it is desired the clutch member 48 shall stop. Again, the foil cutting mechanism need not necessarily be operated by the specific camming elements |24 and |20 and associated frame shown in Figs. 6 and '1, but instead, a microswitch operating a solenoid might be substituted. Such a microswitch arrangement would comprise a switch contac-t mounted on the halfnut 94 and a cooperating switch contact located along the path of travel of the half-nut about where cam |26 is located, and connection of these switch contacts while the half-nut is travelling could be arranged to close a circuit from an electrical source through a solenoid so that the solenoid plungerwould operate on member |28 (Fig. l0) of the foil cutter like arm |21 does, to produce the cutting operation.

Another modification which might be made if desired is to cause 4the strip feed rollers 29| and 292 to engage upon the disengagement of the mandrel driving clutch and then to disengage when the driving clutch engages, so that these feed rollers are engaged only during the indexing movement. Such a modification is illustrated in Fig. 15. In that ligure the clutch fork 41 is provided with a cam element 315 adapted to engage a ncorresponding cam 316 fastened to a lever 311 which is mounted on a shaft 318. Shaft 318 can be journaled in any suitable manner within a bearing 319 attached to the main frame I6. The opposite end of shaft 318 has attached to it an arm 380 which may have freely mounted at its outer end an anti-friction roller 38| adapted to rest on a bar 382. Bar 382 is attached to the frame member 244 for the lower feed roller 292. In the operation of this modification, when the clutch fork 41 is moved to the clutch disengaging position, its cam 315 moving away from cam 316 allows arm 311 to drop and rotate shaft 318 counterclockwise (with reference to Fig. l5), which lifts the roller 38| allowing bar 382 to be lifted under action of tension spring 383. This moves roller 292 into engaging position against the cooperating roller 29| so that the rollers thus feed the strips during the indexing movement of the indexing head; and when the clutch fork 41 is moved again to the clutch engaging position for the next winding, cam member 315 lifts cam 316, causing the feed roller 292 to disengage again from roller 29|.

While` this invention has been described in connection with a specific embodiment, it is not conned thereto and various modications may be resorted to within the scope of the appended claims.

Instead of the latch or trigger finger 208 for holding the mandrels open, a segment of a cam may be employed, the lower end of which is formed as a hinge or latch. The cooperative part mandrel (to the right Fig. 3) has a roller attached to it and as the mandrels are opened at the bottom or third position this part mandrel catches behind the cam latch when in maximum open position. This follows around in the open position being held open by that segment of a cam for about nity-degrees.- lFor-the' next thirty-nine degrees the partnandrl Slowly closes Vuntil the tips of the two-cooperative part mandrels are in line with each other. This r'nodied latching means avoids any heavy shockfrom'long quick travel of the cooperative part mandrel, taking place'asthe head 25 is ind'r'edthrough twopositions."' f' `fThe` 'pi`n`s .or "I'iedls" |70 ,(Fig`."l) maybereplaced by affeltpa'd'h'oldin'g the papers' after severing and provided with springs for cushioning; This 4 pad e'ngagesacross the entireweb of paper pressing toward the slotl cutting anvil. Ai catch 'may also* be'added' toholdithe frarneQZM (Fig. k5i tilted and thug nord' therese roiiersize'l, 292 open until the driving clutch is entirely disengaged and hits its stop. This prevents these rollers from closing until the winding has stopped and avoids breakage of the paper. The clutch stop is assembled with a shoulder shaft and spring acting as a `cushioner and also as a trip mechanism'for the catch.

Separate motors may be used on the indexing ariens and winding mechanisms, and the rate of winding may be varied for instance by the travel of the half-nut 94 (Fig. '7). An insulated contact on this nut making contact to a commutator. The iirst position of this commutator is connected on series with a rheostat, the second runs the whole length of the Worm 45, and the third position is adjustable for the whole length of the worm and when adjusted, cuts out some of the second position. This third position is a metal piece insulated from the second position and slidably mounted so that the contactor will make contact with this third position through the last part of the winding. This gives an vaccelerated speed in the beginning of the Winding, a predetermined speed in the middle and a decelerated speed at the end of the winding.

This application is a division of my copending application Serial No. 553,773, filed September 12, 1944, now Patent No. 2,384,983, issued September 18, 1945.

I claim:

1. The method of forming a condenser comprising positively gripping and feeding interleaved Vstrips of insulating and conductive material together toward a winding station and a station at which the strips of conducted material are severed, holding said interleaved strips together at a predetermined point by surface pressure against said strips between said feed and said stations adapted to place said strips under tension by resisting the movement thereof, Vengaging and rotating the ends of said insulating strips at said winding station to Wind the strips into roll form against said tension, releasing said positive feed so that the said strips are under the tension of said surface pressure during continuation of said winding, and applying additional tension to said strips approaching said point of surface pressure.

2. The method of forming a condenser comprising supplying interleaved strips of insulating and conductive material under positive gripping pressure, engaging and rotating the ends of said insulating strips to Wind the interleaved strips into roll form, severing the strips of conducting material during said winding, by cutting the strips of conductive material while continuing the rotating of said ends and winding of the insulating strips for a predetermined length, stopping said winding and moving the wound roll to draw said insulating and conductive strips under tension is from said supply, thencutting said insulating strips between said supply and said roll androtating said cut roll, and wipingand pasting the cut ends to fasten lthem in place and complete the roll. Y

3. The ,methddpf forming a condenseras set forth in claim 2 inL Whi'hithe' insulating and con ductive strips -areffed together contact and then ,separatedy 'and Vthenl brought `together again beforewindingintothe roll. 1

yThe method of-feeclingraridcutting strips for ai condenser comprising supplying interleaved in'- sulatingand Icond ive V.strips hel'df together-in face' to face Contact yrider positillegrippingipressure, separating saidilrislatingstripsfrorri a1 conductive strip -w-l'iile winding the forward ends of said strips into roll form and feeding all of said strips forward at substantially the same rate, passing said strips back into face to face contact with each other, cutting a conductive strip at the separated area while continuing the winding and feeding of the insulating sheets and the portion of the conductive strip beyond said cut while discontinuing the feed of the conductive strip approaching said cut. Y

5. The method of feeding and cutting strips for a condenser comprising supplying interleaved insulating and conductive strips under tension against a predetermined drag held together in face to face contact under transverse pressure insufcient to draw an intermediate sheet against said drag, separating said insulating strips from a conductive strip while feeding all of said strips forward at substantially the same rate, passing said strips back into face to face contact with each other, cutting a conductive strip into separated parts at the separated area during the continuous feed of the insulating sheets and the portion of the conductive strip beyond said cut While discontinuing the feed of the conductive strip approaching said cut.

6. The method of feeding and cutting strips for a condenser comprising supplying interleaved insulating and conductive strips held together in face to face contact, separating said insulating strips from a conductive strip whil-e feeding all of said strips forward at substantially the same Y rate, passing said strips back into face to face contact with each other While maintaining all of said strips under tension and gripping the conductive sheet between the insulating sheets at points close to the center of the separated area, cutting a conductive strip into separated parts at the separated area while discontinuing the feed of the conductive strip approaching said cut and continuing Without interruption the feed of the insulating sheets and the portion of the conductive strip which is beyond said cut.

7. The method of feeding and cutting strips for a condenser as set forth in claim 6 inY which there is a positive feeding of the supply of interleaved insulating and conductive strips to the point of separation of said stripsA after a predetermined interval following said cutting of the conductive strip.

8. The method of forming a condenser comprising supplying interleaved strips of insulating and conductive material, engaging and rotating the ends of said insulating strips to wind the interleaved strips into roll form, completing the winding of the strips into roll form, moving the wound roll bodily to a predetermined second station, and positively feeding the interleaved strips of the supply forward at a predetermined rate 

